package rmaqlc31.basic;

public class J05_ComputeInvestment {

	public static void main(String[] args) {
		
		
		double a = 25000;
		double b = a*2;
		int c = 0;
		
		
		while(a<=b){
			a = a*1.06;
			++c;
		}
		System.out.println(c);
	}

}
